The LaserMax LMS-RMSR Red Laser provides a distinctive low light advantage to your handgun. Commissioned by Sturm Ruger as an upgrade to the SR series of pistols, the design cleverly integrates into the sleek lines of the frame. Distinct Tap On/Tap Off switch is easily activated with a right or left hand grip and allows you to select a constant or pulsed beam. Automatic shutoff after 10 minutes prolongs the battery life. For fast, accurate targeting and maximum visibility across all lighting conditions, the LMS-RMSR laser uses a 5mW output – the highest permitted by federal law.